You can change your Tumblr username once every 30 days through your account settings

Tumblr lets you change the username (also called your blog URL) that appears in your blog's web address. The change takes effect when ready, and your old URL stops working. You can make this change once every 30 days, so plan ahead if you want to switch multiple times.

The process itself takes about two minutes. You do not need to create a new account or lose your followers, posts, or messages. Everything stays attached to your account — only the web address changes.

Key Takeaways

  • You can change your username once every 30 days from the Settings page under "Blog" on your account.
  • Your old username becomes available for anyone else to claim after you change it, so pick a new one before you make the switch.
  • All your posts, followers, and messages stay with your account; only the web address changes.
  • If you have shared your old URL in other places online, update those links to your new username to avoid broken links.
  • You cannot reserve a username or hold multiple usernames on one account — each blog has one active URL at a time.

How to access your username settings

Log into your Tumblr account and click the account icon in the top right corner. Select "Settings" from the menu. On the left side, you will see a list of your blogs. Click on the blog whose username you want to change.

Once you are on that blog's settings page, look for the "Blog" section. Your current username appears near the top, usually labeled as "URL" or "Blog URL". This is where you will make the change.

Changing your username step by step

In the Blog section, find the field showing your current username. Click on it to edit. The field will become active and you can type a new username. Tumblr will show you whether the username is available as you type — a green checkmark means it is open, a red X means someone else has it.

Choose a username that is not already taken. Usernames can contain letters, numbers, and hyphens, but not spaces or special characters. Once you have typed a username that shows the green checkmark, scroll down and click "Save" at the bottom of the page. The change happens right away.

After you save, Tumblr may ask you to confirm your email address or re-enter your password for security. Complete this step to finish the change. Your new username is now live, and your blog is accessible at the new web address.

What happens to your old username

Once you change your username, the old one becomes available for anyone else to claim. Tumblr does not hold it for you or let you reserve it. If you think you might want to use that username again in the future, you cannot — someone else can take it within minutes.

This is why it matters to decide on your new username before you make the change. If you are not sure, wait until you are. You can always change it again in 30 days, but you cannot get an old username back once you let it go.

Updating links to your old username

If you have shared your Tumblr URL on other websites, in your email signature, or in social media bios, those links will no longer work after you change your username. The old URL will either show an error or redirect to someone else's blog if they claimed the username.

Before you change your username, make a list of places where you have shared the old URL. After the change, go back and update those links to your new username. This keeps people from landing on a broken page when they try to visit your blog.

The 30-day waiting period between changes

Tumblr enforces a 30-day cooldown between username changes on the same blog. If you change your username today, you cannot change it again for 30 days. This limit applies per blog, not per account — if you have multiple blogs, each one has its own 30-day timer.

The timer starts the moment you save the change, not when you click the button. If you change your username on a Monday, you can change it again on the following Monday. Tumblr does not send you a reminder when the 30 days are up; you will only know you can change it again when you try.

What stays the same when you change your username

Your followers do not disappear. Your posts remain on your blog. Your messages and asks stay in your inbox. Your likes, reblogs, and all activity tied to your account continues as normal. The only thing that changes is the web address people use to find your blog.

If someone was following you before the change, they will still be following you after. They will not be unfollowed or notified that you changed your username. However, if they had bookmarked your old URL or saved it somewhere, that bookmark will no longer work.

Frequently Asked Questions

Can I change my username more than once every 30 days?

No. Tumblr limits you to one username change per blog every 30 days. If you change it and then want to change it again, you must wait 30 days from the date of your last change. There is no way to bypass this limit.

What if the username I want is already taken?

You cannot use a username that someone else has claimed. Tumblr shows a red X next to taken usernames as you type. You will need to choose a different username. If you want a specific username badly, you could contact the person who has it and ask if they would be willing to change theirs, but they are under no obligation to do so.

Will my followers be notified that I changed my username?

No. Your followers will not receive a notification about the change. However, if they try to visit your old URL, they will see an error or a different blog. If you want to tell people about your new username, you can post about it on your blog or message them directly.

Can I have multiple usernames for the same blog?

No. Each blog has one active username at a time. You cannot reserve or hold multiple usernames. If you need a second blog with a different username, you can create a new blog on your account, but each blog is separate.

What if I regret changing my username?

You can change it back to your old username if no one else has claimed it. However, if someone else took your old username after you changed it, you cannot get it back. You would need to choose a different username instead. This is why it is important to think through the change before you make it.